I've just inherited a building with this stuff in it. Haven't been able to get access to all the HVAC equipment as of yet. I've downloaded the literature from Trane. I'm looking for any info you guys could give me. I know this post is pretty vague, but I'm interested in any info you guys could provide. I'm not looking for you guys to walk me through this stuff step by step but just point me in the right direction. Any and all replies would be appreciated.